Mathematics, 16.06.2020 19:57 dashawn3rd55
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 77 minutes and a standard deviation of 12 minutes. Answer the following questions.
Required:
a. What is the probability of completing the exam in one hour or less (to 4 decimals).
b. What is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes (to 4 decimals)?
c. Assume that the class has 60 students and that the examination period is 90 minutes in length. How many students do you expect will be unable to complete the exam in the allotted time (to the nearest whole number)?
Answers: 1
Mathematics, 21.06.2019 19:30
If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b
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Mathematics, 21.06.2019 19:30
Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?
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Mathematics, 21.06.2019 19:30
Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)
Answers: 1
Mathematics, 21.06.2019 22:00
1. how do you convert the repeating, nonterminating decimal 0. to a fraction? explain the process as you solve the problem.
Answers: 2
The time needed to complete a final examination in a particular college course is normally distribut...
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